If a car is never driven in wet weather, can the exhaust system last 200-300 thousand miles before replacement
generally speaking; exhaust systems deteriorate from the inside out because of the above mentioned reasons IE condensation and other corrosives in the exhaust gas stream for every gallon of gasoline burned there is a bout a quart of water formed. that being said, in some parts of the country that have extremely high humidity and near coastal areas external corrosion can greatly accelerate this process. likewise, in areas of the country that salt the roads during certain seasons can contribute to the external corrosion but the above 2 situations are a couple of good reasons why most systems are now made of some type of stainless steel
Depends on what material the exhaust system is made from. The gas that the exhaust system is designed to carry is corrosive to steel. It is highly unlikely that any standard system would last as long as 200 - 300 thousand miles. Perhaps some type of ceramic system would last this long but would be very expensive. But what is the point in fitting an exhaust system that lasts longer than most engines?
No. Wet weather has nothing to do with exhaust system failure. The rust is from the inside out, not the outside in. I doubt any other parts could last that long either.
